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Data on 13 043 operations were abstracted from 108 878 anaesthetic records in the Cardiff Anaesthetic Record System. Nine groups of surgical operations with high mortality in hospital were identified. These records were analysed using a logistic regression model to determine the probability of death in hospital. Variables included in the model were age,(More)
All new interventions and procedures must be properly assessed in comparison to the currently accepted method(s). It is unethical not to do so. The optimum method is by Randomised Controlled Trial (RCT). This is ideally suited to the testing of drugs because the trial can usually be double blind and placebo controlled. RCTs are less commonly used for the(More)
In the face of severe resource constraints, health care systems are seeking both to control costs and to ensure maximum benefits for the resources consumed. The use of Quality Adjusted Life Years (QALYs) is becoming more widely advocated as a decision aid in the solution of resource allocation problems. The QALY combines two dimensions of health(More)
A mathematical model has been constructed to assist in planning the future requirements of a combined haemodialysis and transplantation centre. It has been used to predict the number of patients in the dialysis unit, the general wards, and at home on dialysis, as well as providing further information on transplantation rates and overall costs. The model can(More)
Through a review of the published literature on routine cervical cytology screening, this paper seeks to establish a likely range for the cost of saving a life through this screening programme as presently organised in England and Wales. The current performance of the programme may be expressed in several ways: a cost of 270,000 pounds to 285,000 pounds per(More)
OBJECTIVES This study investigated concerns that have been raised about past and future health effects caused by high power transmissions of high frequency (7-30 MHz) radio waves from military antenna systems at Akrotiri, Cyprus. METHODS A cross-sectional study of three villages (two exposed, one unexposed) collected longitudinal and short-term(More)